球形TiO2颗粒制备工艺研究进展-中国材料进展

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Title:: Research Progress on Preparation Technology of Spherical TiO2 Particles

文章编号:: 1674-3962(2025)10-0960-09

作者:: 郑倩; 夏中华; 杨振华; 颜元东; 李烀; 孔绍曦; 张建平; 闫世成; 曹家凯; 夏炜炜; 冯建情; 1. 南京大学现代工程与应用科学学院，江苏南京 2100232. 南京大学信息管理学院，江苏南京 2100233. 江苏联瑞新材料股份有限公司，江苏连云港 2223464. 扬州大学物理科学与技术学院，江苏扬州 2250025. 西北有色金属研究院，陕西西安 710016

Author(s):: ZHENG Qian; XIA Zhonghua; YANG Zhenhua; YAN Yuandong; LI Hu; KONG Shaoxi; ZHANG Jianping; YAN Shicheng; CAO Jiakai; XIA Weiwei; FENG Jianqing; 1. College of Engineering and Applied Sciences, Nanjing University, Nanjing 210023, China2. School of Information Management, Nanjing University, Nanjing 210023,China3. Novoray Corporation, Lianyungang 222346,Chinaet al.

关键词:: 球形颗粒; 二氧化钛; 化学法; 物理法; 相变动力学

Keywords:: spherical particle; titanium dioxide; chemical method; physical method; transformation kinetics

分类号:: TB383;TM911

DOI:: 10.7502/j.issn.1674-3962.202212018

文献标志码:: A

摘要:: 金红石相TiO₂因其高机械强度、高击穿电压及低介电损耗等优异特性，常被用作聚合物基覆铜板的无机陶瓷填料，以改善基体的介电性能和力学性能。然而，兼具高流动性特征的球形TiO₂粉末的规模化制备仍面临挑战。系统评述了极具工业化潜力的球形TiO2化学与物理制备方法。在化学法方面（主要包括水热法及水浴法），重点分析了可溶性钛源种类、温度场分布、反应压力及介质环境等因素对钛源水解动力学及其初级Ti(OH)4胶束组装成球形结构的动力学影响规律；在物理法方面（主要包括喷雾造粒与高温熔融球化），深入探讨了颗粒组装球化技术与热处理致密化等工艺参数对制备高质量球形颗粒的影响规律，并总结了热处理气氛、杂质元素的种类与含量、初始颗粒尺寸及热处理工艺对锐钛矿向金红石相转变动力学的影响规律。分析表明：化学法制备仍受困于难以精确控制钛源水解动力学、颗粒尺寸均一性不足以及尺寸范围可调性有限等科技挑战；相比之下，物理法制备更易于获得高球形度产品，且颗粒尺寸可在较宽范围内调节，但同样面临颗粒尺寸均一性不佳的技术瓶颈。

Abstract:: Rutile-phase TiO2 is frequently employed as an inorganic ceramic filler in polymer-based copper-clad laminates to enhance the dielectric and mechanical properties of the polymer matrix, owing to its superior characteristics such as high mechanical strength, high breakdown voltage, and low dielectric loss. However, the scalable production of spherical TiO2 powder that also possesses high flowability remains a significant challenge. This review systematically examines chemical and physical methods for synthesizing spherical TiO2 particles with high industrial potential. For chemical approaches (primarily hydrothermal and solvothermal methods), the analysis focuses on the influence of factors like soluble titanium source type, temperature field, reaction pressure, and reaction medium on the hydrolysis kinetics of the titanium precursor and the kinetics governing the assembly of primary Ti(OH)4 colloids into spherical structures. Regarding physical methods (mainly spray granulation and high-temperature melting spheroidization), the review investigates the impact of process parameters such as particle assembly/spheroidization techniques and heat treatments for particle densifying on the production of high-quality spherical particles. Additionally, it summarizes the effects of heat treatment atmosphere, type and concentration of impurity elements, particle size, and heat treatment parameters on the kinetics of the anatase-to-rutile phase transformation. Our analysis indicates that chemical synthesis routes still face significant scientific and technical challenges, including the difficulty in precisely controlling titanium precursor hydrolysis kinetics, inadequate particle size uniformity, and limited tunability of the particle size range. In contrast, physical methods readily yield products with high sphericity and allow particle size adjustment over a wide range, but they also encounter the technical bottleneck of insufficient particle size uniformity.

中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

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